Synthesis of Single-chain Amphiphiles Containing 2,7-Substituted Naphthalene Rigid Segment and Self-organization of the Amphiphiles in Dilute Aqueous Solution

Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (8): 1254.

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Synthesis of Single-chain Amphiphiles Containing 2,7-Substituted Naphthalene Rigid Segment and Self-organization of the Amphiphiles in Dilute Aqueous Solution

LI Guo-Wen¹, LIU Xi-Yu¹, WU Li-Xin¹, SHEN Jia-Cong¹, LIANG Ying-Qiu²

1. Key Laboratory of Superamulecular Structure and Spectroscopy, Jilin University, Changchun 130023, China;
2. Department of Chemistry, Nanjing University, Nanjing 210093, China

Received:1999-01-26 Online:1999-08-24 Published:1999-08-24

Abstract

Abstract: Aseries of single-chain amphiphile containing 2,7-substituted naphthalene rigid segment, alkyl tail chain and spacer portion, C_nH_2n+1OC₁₀H₆O(CH₂)₆N⁺(CH₃)₃Br^-(n=16, 12, 10, 7, 4), has been synthesized. The aggregate morphology of the amphiphiles in dilute aqueous solution was observed by electron microscopy, and found to form aggregate global-shaped vesicles with 200-400nm when n≥7 and unstable dispersion when n=4. The gel to liquid crystal phase transition of the bilayer membranes was studied by means of differential scanning calorimmetry(DSC). The molecular motion in the membranes was investigated by ¹HNMR. The experiment results indicate that the amphiphiles are of practical bilayer forming, capable of organizing biomembrane mimetic agent and suggest that the vesicle structure are composed of the bilayer structure similar to that of biomembranes.

Key words: Self-organization, Bilayer membrane, Vesicles, Phase transition

CLC Number:

O643.1

TrendMD:

LI Guo-Wen, LIU Xi-Yu, WU Li-Xin, SHEN Jia-Cong, LIANG Ying-Qiu . Synthesis of Single-chain Amphiphiles Containing 2,7-Substituted Naphthalene Rigid Segment and Self-organization of the Amphiphiles in Dilute Aqueous Solution[J]. Chem. J. Chinese Universities, 1999, 20(8): 1254.

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Synthesis of Single-chain Amphiphiles Containing 2,7-Substituted Naphthalene Rigid Segment and Self-organization of the Amphiphiles in Dilute Aqueous Solution

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